Adjustable fluorescent lantern



FIG. 1 is a front elevational view of an adjustable fluorescent lantern showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevational view, the left side being a mirror image thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a right side elevational view of the design in an alternate position; and,

FIG. 7 is a bottom plan view of the design in the alternate position. 

The ornamental design for an adjustable fluorescent lantern, as shown and described. 